IL33 (Interleukin 33): IL33 is a cytokine belonging to the IL-1 family and acts as an alarm signal when released by cells under stress or injury. It binds to the ST2 receptor, triggering inflammatory responses, and plays a key role in conditions such as allergies, asthma, and other inflammatory diseases. Research on IL33 investigates its dual role in promoting inflammation and offering protection, with potential implications for therapies targeting chronic inflammation and immune dysregulation.